When you need to polish the inside of a wooden bowl with a grinding wheel, it can be a challenge to prevent scratches on the wood. Using a hand-held sandpaper can also be dangerous. Our bowl sander has dual bearings and a smooth rotating head, which can rotate with the rotation of the bowl when the bowl rotates on the lathe, thus basically solving this problem. The 11.8 inch long handle also helps prevent hand injuries.The head assembly is fully adjustable, so it can be set to any angle required according to the size and curve of the project. Unlike most other bowl sander head components, our bowl sander has two steel bearings, which provide you with super smooth spindle rotation when sanding on a lathe. This also helps to reduce the chance of marking on wood, because the sander can be rotated like many other brands without hanging or hanging.We include the most common diameter sanding head in the bowl sander. The sanding head is made of foam material, just enough to provide you with an excellent appearance every time you sand a project.specificationName: Wood Spin Polishing PolisherColour:Wood colorMaterial:Wood + metalSize:30x3.7cmPackage Contents:1* sharpener1* Sanding pad40* polishing paper1* wrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.